Threshing-machine.



DAVIS. THRESHING MACHINE.

APPUCATION FILED OCT. 2. 1915.

1,226,865. Patented May 22,1917.

4 SNEETS, EEEEE I.

anwmto'c wvmm 371011106; Da'mio M. DAVIS. THRESHING MACHINE. APPLICATION FILED ncr. 2.191s.

Patented my 22, 1917.

4 SHEETS-SHEET 2- N mN 532 f f. :5 -m. -Fle;

M. DAVIS. THBESHJNGJMCHINE. APPLICATION FILED 001.1. 1916.

' Patented May 22,1917.

4 SHEETS-SHEET 3.

wdueoo' M. DAVIS.

THRESHING MACHlNE.

"memo flLED act. 2. 1915.

I Patented May 22,1917

4 SHEETS-SHEET 4.

anue'nto'c and I UNITED. STATES PATENT omen.

MONROE news, or mm), OKLAHOMA, Assmnon or ONE-TWELFTH r0 cnoncn n.

WILSON, or mun, OKLAHOMA.

THRESHING-MACHINE.

Specification of Letters Patent.

Patented May 22, 1917.

Applicatlonfilcd October 2, 1916. Serial No. 123,412.

To ollwhom it may concern: 7 Be it known that I, Mormon DAVIS, a citizen Qfthe United States, residing at Enid, in the county of Garfield and State of Oklahoma, have invented certain new and useful Ix'nprovemcnts in Threshing-Machines; and I do declare the following to be a full, clear, and exact descri tion of the invention, such as will enable otliers skilled in the art to which it appertains to make and use the same.

My invention relates to improvements 111 threshing machines of the general type shown by my U. S. Patent 1174398 of March 7 1916, the object being to provide a niachine which will be simple and comparatively inexpensive yet even more efiieient than that shown by the patent referred to.

With the foregoing general object in view, the invention resides In certain novel features of construction and uniquecombinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which constltute a part of this application and in which: l

igure 1 is a side elevation of the unproved machine;

Fig. 2 is substantially a central lon ltudinals'ection thereof;

igs 3, 4 and ,5 are vertical transverse vertical sections taken on the planes of the lines 3-3,

4-4 and 55 of Fig. 2;

Fig. 6 is a perspective view of parts of the main rotary beater;

'Fig. 7 is a trai'isverse section thereof; I

Fig. 8 is a detail longitudinal section of a portion of the auxiliary beater;

Fig. 9 is a transverse section thereof.

In specifically describing the construction all disposed in the same direction, contracted at 7 and joined to the smaller ends of adjacent sections, said contracted portions 7 constitutin circumferentially extending in ternal shou ders which face the smaller end of the chamber 5.

The larger end of the chamber 5 is closed by an end plate 8 having at its lower edge an opening from which a irustO-cone shaped inlet hood 9 cxtends.outwardly, the larger outer end of said hood having an aperture 10 into which one end of a feed dpipe 11 projects, said pipe serving to con. not the unthreshed grain into the chanilber 5 when suction is created through said chamber an pipe bynieans to'be described.

A fan casing 12 is provided at the smaller end of the chamber 5 and a single horizontal shaft 13 extends longitudinally through the center of said chamber and easing, said shaft being provided with a pulley 14 by means of which it may be driven and preferably having a fly-wheel 15 for steadying its motion. A suction fan. 16 is mounted on shaft 13 within the casing 12 creating; a strong suction or current ofairthrough the pipe 11 a11d"ohamber- 5, said current being expclled tlfi'ougli the outlet l'i' of the casing" 12. The portlon of the shaft 13 in the chem? her 5 carries a plurality of hubs 18 having laterally extendingiears 19-to which a plushown in the drawings above briefly den scribed, similar characters will be employed to designate corresponding parts through-i out the several. views and reference will be? herein made to the numerous elements byi their respective indices.

I To thisend, the. numeral 1 designates a frame mounted on.

front and rear wheels 2 and 3 respectively rovidcd with a tongue 45 by meansof ralit of radiallv disposed beater arms 20 are cited or otherwise secured, said arms byreference' to Fig. 6 and being w twisted :asto cause the to assist in moving'the unthe: latter. The. outer ends of the arms 20 are directed angularly toward said outlet end as shown clearly in Figfaywherebyas the material within the chamber 5 is drawn into contact with said arms by lthe current ofv air passing through the chamber, said arms will deflect the same outwardly as well as throwing it by centrifugal force. This Operation is sufi'icient to separate the grain from the straw by centrifugal fpower, the threshed grain being discharged rom chamher 5 through a plurality of 'outlet tubes or the like 21 which depend frpmthe sections 6 immediately in advance of the shoulders 7, said tubes discharging into a horizontal grain conduit 22 which extends beneath the chamber 5 and casing 12.

i being spirally arrangedfas seen most clearly per end 33 of said conduit.

One end of conduit 22 delivers into a pit 23 at the lower end of a grain elevating conduit 24, and for feeding the grain from said conduit into the pit 23 a comp i'ed conveyer and auxiliary beater 25 is provided. The device 25 consists of a horizontal tubular shaft 26 which extends through the conduit 22 and is formed at intervals with spirally arranged slots 27, flat metalv barstant feature of the machine since if any heads of grain have passed into said conduit, the grain will be beaten therefrom by the combined beater and conveyer 25. the completely threshed grain being fed into the pit 23'while this operation is taking place.

An endless belt elevator 32 is mounted in the vertical conduit 24- for carrying the grain from the pit 23'aud discharging it through the laterally and downwardly directed up- The grain may be received in sucks but will preferably be deposited into a wagon body. For removing any chall' and other dust from the threshed grain, a pipe 34 leads from the discharge end 33 of conduit 2i into the larger end of the chamber 5 whereby suction will be created through said pipe to draw such chati' and dust and redeposit the same into the. aforesaid chamber from which it is adapted to be expelled with the straw. the latter being drawn into and expelled from the casing l2 by the fan 16. Any suitable valve 555 will preferably be provided for controlling the strength of the slll t llltfnt passing through pipe 3i. I

In operation, the shaft it? will be rotated by applying power to the pulley 14, the .fan lo. the beater arms 20. device 27), and conveyor 32 being all driven at the same time and at a connuiratively high rate of speed. Thefan 1(3 and the angularlv disposed arms 20 coiiperatc in producing a strong suction or current of air-through the pipe .1] and chamber 5, and in discharging This current through the outlet 17 of casing 12. This current of air as itfpasses-through the inlet to the fan travels in a straight line and the column of moving air is of a diameter (oi-responding at its ends with the diameter of the inlet and the eye of the fan, thus *aving substantially a calm or body of dead air surrmu'uliug the column of moving airexcept when the small current of an" through the pipe 34 enters the threshing chamber.

VVhen' the unthreshed grain enters the chamher through the feed pipe 11, it is in a mass and this mass is rapidly rotated by the arms 20 whereupon the rain is threshed by centrifugal force. This force causes the grain to rotate around the inner side of the wall of the threshing chamber, comin wholly within the dead air zone, while t e straw being lighter goes out tbiou ll the fan in the moving of air by the arms 20. This causes the sepaair, being held within this column ration of the threshed wheat or from the straw and such. separation is facilitated materially by the cone-shape of the numerous sections of the threshing chamber, it being apparent that when the threshed grain is thrown around in contact'ifith these cone-shaped sections, it travels toward the larger ends thereof. This gives amethod of sepa 'alion wherein the straw is passed forwardly in the threshing chamber, while the threshed grain is traveling rearwardly by reason of the shape of said chamber. The present machine is so constructed that the column of moving air sweeps directly over the shoulders at the bottom of the threshing chamber but not so close else where. This permits the threshed grain to drop into the recesses formedby the shoulders while the straw and chaff is swept on "ward by the moving air column 4.

In conduit the combined. conveyer and beatei 25 pi. forms an auxiliary. threshing operation has entered the conduit without being other grain and thus insures that if any grain will here take place. \Vhile this operation is going on the unthreshed grainv is being fed into the pit 23 by the arms 29 and from said pit it will be conducted by the, elevator 32 to be discharged ,through the delivery end 33 of the vertical conduit 2-1. As grain is thus leaving the machine, the air current created through pipe 3% will remove all chaff and dust therefrom and return it to the chamber 5 to be expclledwith the s raw.

The improved machine constructed substantially as described is highly eliicient and is adaptable-for use on all kinds ofsmall grain, it being wellsuited for threshing rice Inasmuch as itwill not crack the grains nor remove the bulls therefrom have been shown, but lavish it understood.

that numerous changes maybe made within the scope of the invention as claimed without sacrificing the main advantages thereof.

.1 clahn:

I H 1; A" threshing machine comprising a horizontally elongated imperforate,threshing chamber having 111 one-end an unthresh'ed grain mlet and in its other end a straw and chaff outlet, said chamber having a plurality of longitudinally spaced circumferential shoulders on its interior and being decreased in diameter from each shoulder to the next succeeding shoulder, said chainbcr having in its lower side a plurality of threshed grain outlets disposed immediately in advance of saidshoulders; in combination with means in the chamber for threshing the grain and separating the same from the straw by centrifugal force.

2. A threshing machine comprising a horizontally elongated imperforate threshing chamber consisting of a plurality of axially alined frusto-cone shaped sections horizontally elongatedfimperforate threshchamber and through wel,, a.l, airi1a.immaterial-Wash."minim,".7 t

in chambepdecreased in diameter from one on to its other and having in its larger end an unthreshed grain inlet while at lon itudinally spaced points seidichamber is ormed with annular shoulders-facing its smaller end and immediate] in advance of said shoulders withthree edgrain outlets, the latter being-disposed in the lower side of said chamber, a .fan casin into which the contracted ends of the a oresaid chamber discharges, a horizontal shaft passinglongitudinally through the center of said said casing, means on said shaft for thre ing the grain and separatin the-same from the straw by centrifugal orce, and a fan mounted on said shaft in the fan casing for ,drawin the un threshed grain through the chem r'and for discharging the straw and chafi'.

4., A} threshing machine comprising a horizdntally elongated threshing chamber decreased in diameter from one end to its other and having in its larger end an an while at longitudinally threshed grain inlet formed with spaced points said chamber is annular shoulders facing its smaller end and immediately in advance of said shoulders with threshed grain outlets, the latter being disposed in the lower side of said chamber,

a fan casing into which the contracted end of the aforesaid chamber discharges, a horizontal shaft passing longitudinally through the center of said c amber and through said means on said shaft for moving the casing,

rain circumferentlally to sepaunthreshed.

rate the grain from the straw by centrifugal force, a fan mounted on said shaft in the fan casing for drawing the unthreshed grain through the chamber and for discharging the straw and chaff, and a horizontal conveyer conduit into which the threshed grain is deposited from the aforesaid outlets.

5. A threshing machine comprising a threshing chamber and means for creating a stron air current therethrough to carry the ant reshed' rain through said chamber and discharge tie straw therefrom, means for receiving the threshed grain from the threshing chamber, a convcyer conduit for carrying said grain from said means, and a suction pipe leading from said conduit to the threshing chamber, whereby suction will be created through said pipe to draw all chaff and dust from the threshed grain.

6.-A threshing machine comprising an elongated threshing chamber having at one end an unthreshed grain inlet and at its other end ast'raw and chaff oi'itlet, said chamber having a threshed grain outlet between its ends, threshing means in the aforesaid chamber, a suction fan at the delivery end of said chamber for creating a strong draft of air therethrough and for dischargin the s'traw, a conduit extending horizon ta ybeneath the aforesaid chamber to receive the grain therefrom, an elevator conduit rising from the aforesaid conduit and adapted to carr the grain therefrom, and a suction pi e eading from said elevator conduit to t e threshing chamber whereby suction will be created in said pipe to is move all chaff and dust from the grain.

7 A threshing machine comprising a horizontally elongated 'imperforate threshing chamber consisting of a lurality of axially threshed alined frusto-cone-shape sections with'their cham r communicates, a shaft extending axially through the threshing chambered a plurality of threshing. said shaft foxjthrsli-f said fan casing, arms radiating from ing the grain and whirling the straw and grain circumferentially to separate thelat: ter from the former by centrifugal force said. threshing chamber having a series ''o thrashed grain outlets at its lower side dis: posed at the aforesaid shoulders, and a fan on the shaft fan casing for drawing the chaff and straw from the threshing chamber.

located within the aforesaid 8. A threshing machine comprisinga hori f zontally'" elongated imperforate g threshing chamber consisting of a. (plurality of axially alined frusto-cone-shape sections with their larger ends disposed in one dirertion and rontrarted to t'ortn annular internal shoulders to which the smaller ends of adjacent Slt'llUIlH are united, a rlosure lot the larger end of the. threshing ehalnher having at its lower edge an unthreshed grain inlet. a tan easing with whieh the smaller end of said t-hamhe'r eomniunirates. a shaft extending axially through the threshing (-hatnher and said 'fan easin f, a plurality of fan-like threshing blades radiating from the aforesaid shaft and lllt'lltlt'tl toward the eontrart ed end of the threshing rhanlher. and a tan set-tired on said shaft and disposed in the fan easin fsaid hlades serving:- to thresh the grain and the inelination of said hlades eooperating with the draft of air raused by the fan to throw the straw and grain outwardly. t

threshing: lllilllllllt' eontprising a horiz ntally elongated impertorate threshint: 1'l|;lll]l)(l. a fan t;t. ll|; with whieh one end of said l'ltttltl ttt' eonununit'ates a tan in said easing for drawing a rurrent of air through said tlttlll1l)t'l. a elosure for the other end of said rhaniher having an inlet of t-onsiderahly less size than said closure to direet the air eurrent through a restrit-tt-d portion of tho ell-anther to leave suhstantially a void around said eurrent, means in said rhainher in the path of tho eurrent of air for threshing the grain and throwing the threshed grain into said void by eentrit'ugal tot-re and grain outlet means from the lower side of said chamber.

ltl. A threshing lnat'hine eoniprisint a horizontally elongated inipert'orate thresh in; rhatnher. a tan easing with whieh one end of said rhaniher eoinniunit'ates, a tan in said easing for drawing! a eurrent of air through said ehainhelu a t-losure for the other end of said t'hainher harin; an inlet of eonsiderahl less size than said rlosure to direm-t the eurrent of air through a restrit-ted portion at the rhamher to leave suhstantialtx' a void around said rurrent. means in said ('llllllllltl in the path ol the tltrrent ol' air for threshin; the grain and throwing the threshed grain into said \oid hr rentl'itugal foree said rhaniher having non-rotat in; means formed in a plurality of units for feeding! the threshed grain rearwardlr as the straw is earried forwardly hy the air eurreut. and threshed grain outlets at the rear ends of said units.

In testimony whereof I have hereunto set.

my hand in the present-e of two suhserihin;

witnesses.

MONROE "DAVIS i tnesses:

C. L. Swims, F. Yot'x'us.

fat) 

